One question about having a form inside a widget: How would you make the form keep its state after s

U01LKKBK97T

One question about having a form inside a widget: How would you make the form keep its state after submission? I can't see that this has been solved properly yet.
In vendor/spryker-shop/availability-notification-widget/src/SprykerShop/Yves/AvailabilityNotificationWidget/Controller/AvailabilityNotificationSubscriptionController.php e. g. I can see that it will take the errors out of the form and add them as flash messages.

if ($subscriptionForm->isSubmitted() === false || $subscriptionForm->isValid() === false) {
    $errors = $subscriptionForm->getErrors(true);

    foreach ($errors as $error) {
        $this->addErrorMessage($error->getMessage());
    }
}

Is there anything better than that? I'd rather keep inline form messages to display them along with the corresponding form field.

U01LKKBK97T

Just in case that somebody else might stumble upon this...

I solved it by passing the request to the widget:

{% widget 'FooWidget' args [app.request] %}{% endwidget %}

Then, inside the widget I can call handleRequest on the form again which will make inline errors reappear.

/**
 * @param Request $request
 */
public function __construct(Request $request)
{
    $this->addParameter('fooForm', $this->getFooForm($request)->createView());
}

/**
 * @param Request $request
 * @return FormInterface
 */
protected function getFooForm(Request $request): FormInterface
{
    return $this->getFactory()
        ->getFooForm()
        ->handleRequest($request);
}

U01LKKBK97T

One more addition:
In your controller you might need to redirect with HTTP status 307.